EP 3043698 B1 20171018 - SEPARATION OF INTERFERENCE PULSES FROM PHYSIOLOGICAL PULSES IN A PRESSURE SIGNAL
Title (en)
SEPARATION OF INTERFERENCE PULSES FROM PHYSIOLOGICAL PULSES IN A PRESSURE SIGNAL
Title (de)
TRENNUNG DER INTERFERENZPULSE VON PHYSIOLOGISCHEN PULSEN BEI EINEM DRUCKSIGNAL
Title (fr)
SÉPARATION D'IMPULSIONS D'INTERFÉRENCE D'IMPULSIONS PHYSIOLOGIQUES DANS UN SIGNAL DE PRESSION
Publication
Application
Priority
- SE 1351040 A 20130909
- EP 2014069098 W 20140908
Abstract (en)
[origin: WO2015032948A1] A filtering device receives a signal from a pressure sensor in an extracorporeal fluid circuit connected to a subject and processes the signal to separate physiological pulses, e.g. from the subject's heart, from interference pulses, e.g. from a pump in the fluid circuit. The device repeatedly (iteratively) processes a signal segment by alternately subtracting (S3) a template signal from the signal segment, and applying a refinement processing (S6) to the resulting difference signal to generate a new template signal. By proper selection (S2) of the initial template signal, consecutive difference signals will alternately approximate the sequence of interference pulses in the signal segment and the sequence of physiological pulses in the signal segment. The refinement processing (S6) aims at alternately cleaning up unwanted residuals from interference pulses and physiological pulses, respectively, in the respective difference signal, so as to improve the accuracy of the template signal between the subtractions.
IPC 8 full level
A61B 5/021 (2006.01); A61B 5/00 (2006.01)
CPC (source: CN EP US)
A61B 5/02108 (2013.01 - CN EP US); A61B 5/4836 (2013.01 - CN EP); A61B 5/7217 (2013.01 - CN EP US); A61B 5/7235 (2013.01 - EP US); A61M 1/3656 (2014.02 - CN EP US); A61B 5/4836 (2013.01 - US); A61B 5/7235 (2013.01 - CN); A61M 2205/3331 (2013.01 - CN EP US); A61M 2230/30 (2013.01 - CN EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015032948 A1 20150312; AU 2014316960 A1 20160310; CA 2921945 A1 20150312; CN 104619246 A 20150513; CN 104619246 B 20161130; EP 3043698 A1 20160720; EP 3043698 B1 20171018; ES 2650796 T3 20180122; US 10314965 B2 20190611; US 2016206804 A1 20160721
DOCDB simple family (application)
EP 2014069098 W 20140908; AU 2014316960 A 20140908; CA 2921945 A 20140908; CN 201480001255 A 20140908; EP 14766418 A 20140908; ES 14766418 T 20140908; US 201414917099 A 20140908